If it was easy, everyone would play guitar! I agree with all the above comments. If you are a normal person, you will have trouble throughout your guitar playing days. That's the fun of it. As you conquer something, you won't be satisfied so you will try something harder. That should be fun.

Beginner guitar playing is like college. If you can make it through the 1st semester, chances are you will make it through the rest of the education process. Don't "stay" frustrated. You can be frustrated at times, but think back why you started playing. You thought it would be enjoyable. It will be.

The one thing that you need to remember besides repititious practicing is- go real, real slow to start with. Make sure that you are changing your chords in the easiest way, making sure that you keep your fingers close to the frets and make the least amount of movements that you can to change. Sometimes you will see that a finger or two does not need to change positions, etc. Then when you get a chord change perfect at a slow speed, slowly pick the speed up. This helps conquer any bad habits that you may develop if you try the changing at faster speeds in the beginning.

Just have fun. Leave the frustration with paying rent, paying taxes or anything else.